The portrait looks ... ok, ish.
I'm not sure who to compliment on the outcome though, you or the guy who made the program.
Just my opinion and I'm not trying to discourage you from using whichever program you like here:
look at some of the really long threads on this very page, you know, the ones which have 15+ pages to them... look at the stuff people are making on the most recent page then go back to page 1.
I'll tell you the truth, the ONLY way you can be a horrible artist is if you don't try
. I haven't submitted a single attempted portrait which didn't get a 'learn to draw' response. I'd love to tell you how I've improved and have you look under my name and see something like "lead art developer", but truth is, I still suck and I'll continue to suck until I have the time and money to spend longer working on Wesnoth related stuff. When I submit stuff, despite all the soul crushing criticism, I learn at least 1 thing from the feedback I get and I will improve.
I know you can make ok, ish looking portraits using a program someone else wrote for the purpose and if you use them in your own campaign some peopel will think they look cool and that they make your campaign worth palying, but do me a personal favor though: please don't stop trying to draw your own.
One more thing: many people have a stick up somewhere about things being in the "Wesnoth style". Using this program to make portraits for your own campaign would work but they will jump on you if you suggest using them anywhere else. Personally I don't care but I thought I'd bring that up before you feel like 'people are kicking your ass for no good reason and what the hell are you even doing on this forum, if they are going to be like that they can keep their stupid little forum and their game... etc' (I've been there often).
Suggestions: 1) draw really rough portratis all in a consistent style and then use your program to make them. Drawing will give you and idea of what you want to portray in the character while the program will make something which looks like it was done by somebody else. Take the images the program drew and make small edits to them to make them "yours" - later on you can draw your own portraits from scratch.
2) check out the infamous
they were fun!
Ok, good luck and keep drawing, with or without your programs.